Cap for marking and detecting an underground utility



FIG. 1 is a top, side and front perspective view of a cap for marking and detecting an underground utility.

FIG. 2 is a top view thereof;

FIG. 3 is a front view thereof, the left side, right side, and rear views being identical;

FIG. 4 is a bottom view thereof; and,

FIG. 5 is another top, side and front perspective view.

The broken lines defining of a central circle on the top of the design and of a stake in FIG. 5 depict environmental subject matter that forms no part of the claimed design. 

The ornamental design for a cap for marking and detecting an underground utility, as shown and described. 